FR2786040B1 - DIFFERENTIAL PROTECTION DEVICE - Google Patents

DIFFERENTIAL PROTECTION DEVICE

Info

Publication number
FR2786040B1
FR2786040B1 FR9814681A FR9814681A FR2786040B1 FR 2786040 B1 FR2786040 B1 FR 2786040B1 FR 9814681 A FR9814681 A FR 9814681A FR 9814681 A FR9814681 A FR 9814681A FR 2786040 B1 FR2786040 B1 FR 2786040B1
Authority
FR
France
Prior art keywords
protection device
differential protection
signal
detection means
threshold
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
FR9814681A
Other languages
French (fr)
Other versions
FR2786040A1 (en
Inventor
Bruno Beranger
Simon Tian
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schneider Electric Industries SAS
Original Assignee
Schneider Electric Industries SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schneider Electric Industries SAS filed Critical Schneider Electric Industries SAS
Priority to FR9814681A priority Critical patent/FR2786040B1/en
Priority to AT99410135T priority patent/ATE462214T1/en
Priority to EP99410135A priority patent/EP1003263B1/en
Priority to DE69942169T priority patent/DE69942169D1/en
Publication of FR2786040A1 publication Critical patent/FR2786040A1/en
Application granted granted Critical
Publication of FR2786040B1 publication Critical patent/FR2786040B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
    • H02H3/32—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
    • H02H3/33—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers
    • H02H3/337—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers avoiding disconnection due to reactive fault currents

Abstract

The system comprises a first diode detection means that monitors the current differential and a signal that represents the voltage within the network. The detection means is connected to a comparison means that compares the signal with threshold levels. If the threshold is reached the system is shut down.
FR9814681A 1998-11-18 1998-11-18 DIFFERENTIAL PROTECTION DEVICE Expired - Fee Related FR2786040B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FR9814681A FR2786040B1 (en) 1998-11-18 1998-11-18 DIFFERENTIAL PROTECTION DEVICE
AT99410135T ATE462214T1 (en) 1998-11-18 1999-10-15 DIFFERENTIAL PROTECTION
EP99410135A EP1003263B1 (en) 1998-11-18 1999-10-15 Differential protection device
DE69942169T DE69942169D1 (en) 1998-11-18 1999-10-15 differential protection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9814681A FR2786040B1 (en) 1998-11-18 1998-11-18 DIFFERENTIAL PROTECTION DEVICE

Publications (2)

Publication Number Publication Date
FR2786040A1 FR2786040A1 (en) 2000-05-19
FR2786040B1 true FR2786040B1 (en) 2001-01-12

Family

ID=9533035

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9814681A Expired - Fee Related FR2786040B1 (en) 1998-11-18 1998-11-18 DIFFERENTIAL PROTECTION DEVICE

Country Status (4)

Country Link
EP (1) EP1003263B1 (en)
AT (1) ATE462214T1 (en)
DE (1) DE69942169D1 (en)
FR (1) FR2786040B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2854741B1 (en) * 2003-05-05 2005-06-24 Schneider Electric Ind Sas DEVICE AND METHOD FOR DETECTING EARTH FAULT AND RELAY HAVING SUCH A DEVICE

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2538179B1 (en) * 1982-12-21 1985-10-04 Merlin Gerin RESIDUAL DIFFERENTIAL TRIGGER WITH STATE VARIATION DETECTION

Also Published As

Publication number Publication date
ATE462214T1 (en) 2010-04-15
DE69942169D1 (en) 2010-05-06
EP1003263B1 (en) 2010-03-24
FR2786040A1 (en) 2000-05-19
EP1003263A1 (en) 2000-05-24

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Legal Events

Date Code Title Description
CD Change of name or company name
CJ Change in legal form
ST Notification of lapse

Effective date: 20110801